GIANT ELECTRONICS LTD.
Title: Alignment Procedure
Model: T5025/T5525
Version:
00
THE CONTENT OF THIS DOCUMENT IS GIANT ELCT.LTD. INTELLECTUAL PROPERTY AND IS THE PROPERTY OF GIANT, IT
IS TO BE TREATED AS STRICTLY AND IS NOT BE DISCLOSED, REPRODUCED, OR USED EXCEPT AS AUTHORIZED IN
WRITING BY GIANT ELECTRONIC LTD. IN CONNECTION WITH THE MANUFACTURE, MAINTENANCE AND USE OF THE
GIANT EQUIPMENT WHICH IT PERTAINS. COPYRIGHT @GIANT ELECT. LTD, ALL RIGHTS RESERVED
tuneup.doc
4/5
B. CASING LEVEL
N O
ITEM
ALIGNMENT METHOD
REMARK
1.
Current Consumption
1. Set A-METER. With volume switch OFF, check the
OFF current <10
µ
A.
2. With volume switch ON, check the standby current
<50mA.
Press 'PTT' switches and check the TX current
<500mA.
2.
TX Frequency
1. Check CH1=462.5625MHz
+
/-500Hz;
2. Check CH14 =467.7125MHz
+
/-500Hz.
3.
Noise- Detector
1. Set the distance between antennas of SG and checked
unit to 0.3M ~ 0.5M.
2. The antennas of SG and checked unit should be parallel
to make the electromagnetic field of SG.
3. Radiate equably to the antenna of checked unit.
4. Set SG to -90dBm with 1.5KHz deviation, 1KHz tone
on CH7.
5. Adjust VR102 for HIGH state: 8 ~ 13dB SINAD.
When
adjusting
Noise-Det.,
Should
reduce any
interference
from other
Instruments
and body.
4.
Audio RX Path CH7
1. Set SG RF level to -50dBm with 1.5kHz Dev.; 1kHz
AF , Rotate the volume switch to the position, which
give an Max output.
2. Check speaker O/P level >85dBspL(30cm distance).
3. Set SG RF level to -60dBm with 1.5kHz Dev.: 1kHz
AF.
4. Plug the dummy speaker and dummy microphone into
audio jet.
5. Rotate the volume switch to the position, which give an
out put 900+/-50mv.
6. Set SG RF level to -90dBm with 1.5kHz Dev.: 1kHz
AF.
7. Check the radiated sensitivity correlate to the golden
sample.
8. Audio frequency response.
a) Set SG RF level to –60dBm with 1.5kHz deviation at
1KHz audio frequency.
b) Rotate the volume switch to the position, which give
an output 100mV
±
5mV (voltage difference of
dummy speaker).
c) Vary the audio frequency from 300Hz to 3KHz.
d) Check the RX response compare to 1KHz tone.
i)
500Hz: + 5.0 dB to +14.0 dB.
ii)
2.5KHz: -12.0 dB to –20.0dB.
9. Maximum and Minimum Audio Output Power.
a) Set SG RF level to –60dBm with 1.5kHz deviation at
1KHz audio frequency.
b) Rotate the volume switch to the position, which give
a maximum output with distortion <5%.
c) Check the voltage difference of dummy speaker
>/=900mV.
d) Set maximum audio output to 0dB. rotate the volume
switch to the position, which give a minimum output.